Hi,
I wonder why you can't open the link? I just clicked on it and it went right to the photo.
It is from the Richmond Hill Public Library. Perhaps you will have better luck getting to the photo going through the Library's site one step at a time...
Here is the Library's main site
http://www.rhpl.richmondhill.on.ca/RHPL/In the bar at the top, select Interest Areas and pick Local History and Genealogy from the drop down menu.
From that page, go to the "Information" box at the right of the screen and choose Local History and Genealogy Databases.
On this webpage, select the second option (under the link to Ancestry) - "Combined Search for South York Region Local History".
This should take you to the search page for their local history collection - which includes cemeteries.
Type Stonehouse into the search box and you should see all of the names on the tombstone pop up. Just click on the number next to any one of the names to get to the image of the stone.
I hope this works for you...
RK